1102320031220 has 48 divisors (see below), whose sum is σ = 2372923295568. Its totient is φ = 429885066240.

The previous prime is 1102320031187. The next prime is 1102320031229. The reversal of 1102320031220 is 221300232011.

It can be written as a sum of positive squares in 8 ways, for example, as 207998020624 + 894322010596 = 456068^2 + 945686^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102320031229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 774062 + ... + 1674458.

It is an arithmetic number, because the mean of its divisors is an integer number (49435901991).

Almost surely, 2^{1102320031220} is an apocalyptic number.

1102320031220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1102320031220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1186461647784).

1102320031220 is an abundant number, since it is smaller than the sum of its proper divisors (1270603264348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1102320031220 is a wasteful number, since it uses less digits than its factorization.

1102320031220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901940 (or 901938 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1102320031220 its reverse (221300232011), we get a palindrome (1323620263231).

The spelling of 1102320031220 in words is "one trillion, one hundred two billion, three hundred twenty million, thirty-one thousand, two hundred twenty".